i.tabclose {
    position: absolute;
    right: 4px;
    top: 0px;
    cursor: auto;
}

i.tabclose:hover {
    background: #ccc;
}

body {
    background-color: #F1F2F7;
!important;
}

.tab-content {
    background-color: #F1F2F7;
}

.panel-body {
    background-color: #F1F2F7;
}
html,body,#main-content{
    overflow: hidden;
    height:100%;
}